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Max Speed While in 4WD 98 Limited?

Pretty self explanatory. I took a trip today in the little snowstorm we had on the east coast. I have a 1998 Limited 3.4 V6 A/T with a E-locker. It's before the fancy multi-mode upgrade of newer years, just 2 Hi and 4 Hi and Low.

I believe the manual says I can shift on the fly up to 35 MPH. Does anyone know the maximum speed I can shift OUT of 4 Hi (button on lever).

Also have heard differing answers on the top speed while in 4 Hi. I had it up to 75 MPH without any strange noises or vibrations but don't want to blow up my transfer case or driveline.

Experts?

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If you want to keep the wear off of your transfer case, you should shift it at 55 MPH or less. Besides, if you need 4wd on the road to drive, you probably shouldn't be going a whole lot faster then that.

Thanks for the answers. I agree that if it is really slippery you shouldn't bomb along at 75, but the traffic was speeding up and slowing down, the road was sometimes just wet (and I have an outside temperature gauge that I was watching closely to make sure the temps were above freezing) and I wasn't sure if I should limit my top speed to 60 mph in 4 Hi or if I could go to 75 and not exceed my transfer cases gearing.
Is there anything in writing for Toyota that I can reference?

well in my old '02 dodge diesel 6speed i could shift into 4wd at any speed..and i there was no limit on top speed in 4wd..now 4lo as a different animal all together...it was mean when it got in 4lo...could pull houses down LMAO

There's a sticker or card thing on the driver's sun visor that states the 4hi and 4lo recommended speeds. Mines says that the highest recommended speed for 4hi is around 55mph and 5 mph for 4lo. I also have a 98 limited with the shift on the fly transfer case.

I drove my 96 tacoma across Kansas in a snow storm on I-70. I was in 4WD most of the time, and driving over 70 MPH most of the way.
I dont think it was a great idea, but everybody on the road was going less than 50 MPH in the only plowed lane. I jumped over to the unplowed lane and balled that jack clear through the state, and halfway through Colorado.

I dont have a drop diff, and a year later, I had a bearing problem on one of the front axles. Could have been from that day in the Blizzard. who knows???